By coating her arm in her Parasitic element, she was able to directly transfer the lingering vitality found within the corpse. Of course, it would have to be fresh to a certain degree, not ones that had already decayed and become rotted.
While she may have preferred to use her Parasitic Lines to feed the needed vitality into her injured arm, it would spark the two enemies before her to attack.
Raising her arm, she roughly moved it around, checking whether or not it was properly fixed or not. Luckily, it was, but unfortunately, she was almost out of mana.
This sort of technique required a large sum of energy whilst also needing a source of what she needed.
Having already paused her volley of bullets on Lincoln, she looked towards Paul, seeing that he had already repaired the open wound in his lower abdomen by sewing it together.
She smirked, amused and also impressed.